Casing for electric cells.



I. KAEMPPER.

CASING FOE ELECTRIC CELLS.

APPLICATION FILED DEC.18, 191';

1,090,624. Patented Mar. 17,1914.

lllllll 4 /7 UNITED STATES PA TENT OFFICE.

CASING FOR ELECTRIC CELLS.

Specification of Letters Patent.

Patented Mar. 1'7, 1914.

Application filed December 18, 1912. Serial No. 737,488.

To all whom it may concern:

Be it known that I, ISABELLA KAEMPFEn, a citizeness of the UnitedStates,and a resident of New York, State of New York, have inventedcertain new and useful Improvements in Casings for Electric Cells, ofwhich the following is a full, clear, and exact specification.

This invention relates to improvements in casings for electric cells,and more particularly in casings for dry batteries which allow the cellto be tested without removing the latter from the said casing wherebythe purchaser can make sure that the cell is active when he purchasesthe same without the necessity of opening the sealed box.

It has been proposed heretofore to provide the casing with a removabletop1 provided with openings re 'stering with t e binding posts of thecell t rough which the terminal wires of a galvanometer etc. areintroduced. This construction however in practical use showed thedisadvanta e that much precious time was lost especial y if the numberof batteries to be tested was great in finding the poles of the cell,and moreover the open holes allowin the free entrance of dust etc. inthe casings and the accumulation therein, while the removable to of thecasing allowed an exchange of al oattery without detection. In order toovercome these disadvantages the hereinafter described casing has beendesigned in which no holes appear, as the contacts are embedded in thematerial of the otherwise sealed box.

A practical embodiment of the invention is represented in theaccompanying drawing, forming part of this specification, .in whichsimilar characters of reference indicate corresponding parts in all theviews, the said invention being more fully described hereinafter andthen pointed out in the appended claims.

In the drawing: Figure 1 is a perspective view of a casing for a vestpocket battery, showing the contacts at the top and one of the sides.Fig. 2 is a similar view of a casing for 'a tubular battery, showing thecontacts at its top and bottom. Fig. 3 is a view, partl in section,showing the contacts in engagement with the poles of a battery. Fig. 4is a view partly in section showing the contacts of the battery andcasing.

The casing according to the present invention consists chiefly of a boxor tube 10 sealed in the manner shown by cementing the top 15 to theturned over edges 17 of the sides, the bottom being sealed in the samemanner, having the brass or copper contacts 11, 12 embedded in thematerial of the casing, either as shown in Fig. 1 at the top 13 and thebottom 14, or as shown in Fig. 2 at the top 15 and the side 16.

It is understood that changes may be made in the form of the containeror in the proportions of the parts constituting the same or in itsmaterial or in the manner of sealing the container, without departingfrom the scope and purpose of the invention, therefore I do not wish tobe limited to the particular form of protective container for drybatteries herein described and shown.

The metal contacts 11, 12 appearing at the outside of the casing are indirect con tact with the contacts of the battery proper within thecasing and therefore by connectingtest wires to the metal contacts atthe outside of the box a short circuit is formed which actuates thebattery.

Having thus described my invention what I claim as new is:

1. A sealed paper carton completely incasing a battery having a contactin each contacting wires temporarily with the external face contactswithout removing the battery from the said carton before the actual useof the same.

2. A sealed paper carton surrounding the contacts of a battery having acontact in each end thereof, contacts in the said carton tact Withoutremoving the battery from the contiguous with the contacts of the saidsaid carton before the actual use of the same. 10 battery and adapted toelectrically connect In testimony whereof I afii: my signature each endthereof,'c0ntacts in the said carton in presence of two witnesses.

being embedded substantially flush with the ISABELLA KAEMPFER. externalface of the carton, wherebv the said Witnesses: battery may be tested bycontacting wires LEO C. KELLER,

temporarily with the said external face con- MAX SCHMIDT.

